能源化学(英文) ›› 2017, Vol. 26 ›› Issue (5): 1007-1013.DOI: 10.1016/j.jechem.2017.07.010

• ARTICLES • 上一篇    下一篇

Resorcinol-formaldehyde resin-based porous carbon spheres with high CO2 capture capacities

Xuan Wanga, Jin Zhoua, Wei Xingb, Boyu Liua, Jianlin Zhanga, Hongtao Lina, Hongyou Cuia, Shuping Zhuoa   

  1. a School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, China;
    b School of Science, State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, China
  • 收稿日期:2017-05-04 修回日期:2017-07-13 出版日期:2017-09-15 发布日期:2017-11-10
  • 通讯作者: Jin Zhou,E-mail addresses:zhoujin@sdut.edu.cn;Shuping Zhuo,E-mail addresses:zhuosp@sdut.edu.cn
  • 基金资助:

    We are grateful for the financial supports by the Natural Science Foundation of China (NSFC21576158, 21476132, 21576159 and 21403130) and Shandong Provincial Natural Science Foundation, China (No. 2015 ZRB01765).

Resorcinol-formaldehyde resin-based porous carbon spheres with high CO2 capture capacities

Xuan Wanga, Jin Zhoua, Wei Xingb, Boyu Liua, Jianlin Zhanga, Hongtao Lina, Hongyou Cuia, Shuping Zhuoa   

  1. a School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, China;
    b School of Science, State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, China
  • Received:2017-05-04 Revised:2017-07-13 Online:2017-09-15 Published:2017-11-10
  • Contact: Jin Zhou,E-mail addresses:zhoujin@sdut.edu.cn;Shuping Zhuo,E-mail addresses:zhuosp@sdut.edu.cn
  • Supported by:

    We are grateful for the financial supports by the Natural Science Foundation of China (NSFC21576158, 21476132, 21576159 and 21403130) and Shandong Provincial Natural Science Foundation, China (No. 2015 ZRB01765).

摘要: Porous carbon spheres are prepared by direct carbonization of potassium salt of resorcinol-formaldehyde resin spheres, and are investigated as CO2 adsorbents. It is found that the prepared carbon materials still maintain the typical spherical shapes after the activation, and have highly developed ultra-microporosity with uniform pore size, indicating that almost the activation takes place in the interior of the polymer spheres. The narrow-distributed ultra-micropores are attributed to the "in-situ homogeneous activation" effect produced by the mono-dispersed potassium ions as a form of -OK groups in the bulk of polymer spheres. The CS-1 sample prepared under a KOH/resins weight ratio of 1 shows a very high CO2 capture capacity of 4.83 mmol/g and good CO2/N2 selectivity of ~17-45. We believe that the presence of a welldeveloped ultra-microporosity is responsible for excellent CO2 sorption performance at room temperature and ambient pressure.

关键词: CO2 capture, Porous carbon, Carbon sphere, Ultra-micropore, Resorcinol formaldehyde resins

Abstract: Porous carbon spheres are prepared by direct carbonization of potassium salt of resorcinol-formaldehyde resin spheres, and are investigated as CO2 adsorbents. It is found that the prepared carbon materials still maintain the typical spherical shapes after the activation, and have highly developed ultra-microporosity with uniform pore size, indicating that almost the activation takes place in the interior of the polymer spheres. The narrow-distributed ultra-micropores are attributed to the "in-situ homogeneous activation" effect produced by the mono-dispersed potassium ions as a form of -OK groups in the bulk of polymer spheres. The CS-1 sample prepared under a KOH/resins weight ratio of 1 shows a very high CO2 capture capacity of 4.83 mmol/g and good CO2/N2 selectivity of ~17-45. We believe that the presence of a welldeveloped ultra-microporosity is responsible for excellent CO2 sorption performance at room temperature and ambient pressure.

Key words: CO2 capture, Porous carbon, Carbon sphere, Ultra-micropore, Resorcinol formaldehyde resins